Gw-instek GPM-8212 User Manual download pdf (Page 11)

POWER METER

USER MANUAL

z PT Ratio setting

1) Press the button of [VPT] to appear the letters of PT on the window 2,

window 3 indicates the previous setting parameter, and window 1

appears "————". If no further action, it will return to previous test

mode within 5 seconds, or press [Å] key directly.

2) Then proceed the following steps to set the desired parameters, such as

1000:

— Press [1] to appear 1---.

— Press [0] to appear 10--.

— Press [0] to appear 100-.

— Press [0] to appear 1000.

3) If there is any mistake, press [Å] key to erase front error numbers.

4) After pressing [ENTER] to save the information, return to test mode.

z CT Ratio setting

1) Press the button of [ACT] to appear the letters of CT on the window 2,

window 3 indicates the previous setting parameters, and window 1

appears "————". If no further action, it will return to previous test

mode within 5 seconds, or press [Å] key directly.

2) Then proceed the following steps to set the desired parameters, such as

1000:

— Press [1] to appear 1---.

— Press [0] to appear 10--.

— Press [0] to appear 100-.

— Press [0] to appear 1000.

3) If there is any mistake, press [Å] key to erase front error numbers.

4) After pressing [ENTER] to save the information, return to test mode

POWER METER

USER MANUAL

6. RS232 COMMUNICATION INTERFACE

z Introduction

The instrument can be operated from a host (eg. A terminal controller,

computer, PLC…) by sending commands through a computer interface on

the rear panel.

z Communication parameter

Baudrate : 1200, 2400, 4800, 9600 bps.

Parity : None

Data bits : 8

Stop bit : 1

z Wire drawing： Located in the rear panel of GPM-8212.

RS-232 RS-485

Pin 232:

SIGNAL

CD RXD TXD DTR GND DSR RTS CTS RI

9 PIN 1 2 3 4 5 6 7 8 9

25PIN 8 3 2 20 7 6 4 5 22

Pin 485:

SIGNAL

TxD

RxD

NC NC NC NC

PIN No. 1 2 3 4 5 6 7 8 9

1 2 ... 6 7 8 9 10 11 12 13 14

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Gw-instek GPM-8212 User Manual Page 11

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